This is a Cannondale Saeco model short-sleeved shirt. I bought it at a used clothing store when I was into vintage clothing. The fabric is relatively thick and sturdy. The "saeco" letters on the chest and the "USA" letters on the sleeves are embroidered. The zipper is in the shape of a wrench. The size is M, but it's an American size, so it's large. It's equivalent to a size L. Please refer to the measurements below. Length: 74cm Width: 64cm Sleeve length: 20cm Shoulder width: 23cm * Photo 10: There are a few black stains on the back, but they are barely visible from a distance. They are only noticeable upon close inspection. * Photo 11: There is a tear on the inside of the armpit, but there is no hole. It doesn't look like it will tear further. Since it's on the inside, it's not visible when worn. Thank you for looking.